V-type belt



u y E. E. BRUNNER V-IYPE BELT 7 Filed July 12, 1945 4 Sheets-Sheet l z au w 4x 4 V Zmventor E. E. BRUNNER' Gttorneg July 16, 1946. E, B U E2,404,271

V-TYPE BELT Filed July. 12, 1945 4 Sheets-Sheet 2 Ennentor E. EJBRUNNER'WwW (Ittomg July. 16, 1946.

.E. E. BRUNNER V-TYPE BELTI,

Filed July 12, 1943 4 Sheets-Sheet 3 3nven to E. E. BRUNNER Maw-W vattorney July 16, 1946.

v E. E. BRUNNER V-TYPE BELT Filed July 12, 1 943 4 Sheets-Sheet -43nnentor E. BRLJNNER Gttorneg Patented July 16, 1946 STAT-ES .V-JIYPEBELT Pennsylvania This invention re1ate's-ItobeI'tsi1sed jfor. .trans- Imitting power .andmore... aitic'ularly, toQV -type belti object of theinvention. is. toprovide an Fig, 11 is an elevation of a.por tion,ot,..the

. vv\hbelt shown,in.F'ig. ,10, looking.in..the .clirection improved ybeltioflt'he type having aplurality ,017) the arrow- I I, Fig. 10.

ot outwardly extending V-shaped 'ribs. .ioi'med T lengthwise thereof andcoextensive fthe length According to. the present. .invent iontheimproved V .type belt. ll isformed of, suitable molded the'ifeojffthe.r'ib'sbeine. a j lnged radially with re- .spect'. to .the fmai'nf bodyofthe'fblt and being -to;ea c'h"other.

'l Another objector theinventio-n isto provide an improved ,V belt" ofthe above type, in which 'theI longitudinally extending ribs arearranged at jee'e l e wa n ;w h e ea eth Another object of the inventionis to provide an improved v-belt o f the above type. in which the also 3.A goth niobti i- 0f et el.

-HpuHeys- With- .thaf reaoing a d. oth r; .e ie sem J d- .preierred2construction angL-a ement.'0.f.: .t .sev ralpa ts which will. be..herena tem u md scribed andclaimed.

In the. accompanying drawings:

r 1 5.. Fig. 1 1s a transverse sectionthrough one.foim I ribs-J2; L3 andl a, it is pqs'isibleltvo traingthe, belt of vebelt embodyingthepresentinvention;

.Fig. 2 is an elevation of .a.p0rtion;of-the..v.=belt .shown inFig.1,.1ooking in.the directioncf .the arrow 2,.Fig. 1.

Fig. .3 is an elevation of a portion of -the V-belt"' cshowninFig.1,..1ooking inthe direction: of..the

.arrow 3,. Fig. 1; I

-: Fig. 4 is altransversesection through another form: of V-belt.embodying/the. present invention; 5'

.5 isan elevation'of .a-portion of-theV'-belt sho.wn.in' Fig. 4 lookingin the direction-of -the arrow 5, Fig. 4;

Fig. 6 is anelevation-of a portion of the V-belt shown in Fig. 4,looking in the direction of the arrow B, Fig. 4;

Figs. '7, 3 and 9 are views similar to Figs. 4, 5 and 6, of another typeof V-belt embodying the present invention;

Fig. 10 is a transverse section through another sheave .22 .having ahorizontal axis; thein.lamayridemth x n and. the rib; lllginayiode. t

groove of ,a pulley or sheave,24...having material] and mayQhfive, threelL -shapedlrib'si l 2,

I3 and H, as shown in Fig. 1., two'V-shapedribs |5,. and I6, asshown inFigs; A; and 7 or four shaped ribs I1... I8, I 9, an,d. 2 l l, as,shownin Fig.

iill of the above, referredto v sh apedhribs. are

.iorrned lengthwise of. the. oeltland extendladially .from the m mbodypo tion, l I... Theseirib are arranged at right. angles or ..90.withrespectr-to l each, other, andthej ribs. 12,. l 3. .and |4 'o f.th'egbelt ho nin' .F gs u d pneferablyn llco re p nd in;

ss sectio nal dimensions. 's; mi1ar1 the 'ribs not I 5 of, the beltshown inFig. gigshould both pr eferably correspond, in cross sectionalfldirnensions and likewisetheribs and; l5 ofyth belt shown. in Fig. .7.should both. correspond cross sectional dimensions. ThefOur Qribs ,l1,1l8,"|9

and. 2.8 o f the form of. ,belt.sho,vvn in.. *f' g..l.0.a1so should, allcorrespond, in cross, ,sectional' di- -mfillfiiq 1.,Inorder to limittoaminimun the amount of stre chi g; f the, m er a us d. constructin thebelt l l, a cable orv similar element 2 can be the molded naterial,asshownjn. Figs. 1, 4. Z and .10, respectively.

"1 With a V.-type,b.e 1t, of., the, formshownin, Fig. 1 in which the,belt is formed wi th, ,three U -shaped over, the cone suriacesorgroovesof sheaves, so

'that' the belt, in travelling around .the sheaves, V will remain at alltimesfin the same. position may rid'e in 1 the ysliapegg groove of apulley. or

pulley. or sheave haying zontal axis" of rotation.

As shown in Fig. 1, the arrangement of the pulley or sheave 24 withrespect to the belt is such that the belt is supported by sheave 24 in ahorizontal flight. At the end of such horizontal flight either a pulleyor sheave 23 or a pulley or sheave 22 can be utilized to guide the beltin a flight 01' a ular to'the longitudinal center line through ribdirection difierent from the flight of the belt past the pulley orsheave 24. Thus, if it is desired that the flight of the belt should bein a direction.

towards the left, then the belt is trained through the V-shaped grooveof pulley or sheave 23. On the other hand, if it is desired that theflight of 1 formthereof, it isnot desired to be. limited therescope ofthe invention. The invention may be ries of ribs [2, l3 and I4 and byarrangingthe pulleys or sheaves 22, 23 and24, respectively, in

the manner heretofore referred to, the belt will beguided by thesheave'sin anumber of'directions without any tendency for, twists beingformed in the belt. In other words, assuming that v the belt of Fig. 1is endless and passes over a series' of sheaves arranged with horizontaland vertical axes of rotation, the belt will make a com pletecircuitaround all of the sheaves with the two ribs l2 and M always verticallydisposed, in the manner shown in Fig. 1, and with the 'rib l3 alwayshorizontally disposed.

Tneform of V-belt shown in 1 may have a portion 25 formed on the mainbody thereof opposite to the rib I3. This portion 26 provides means bywhich a flight or some such element (not'shown) can be secured to thebody of the belt when, desired. i

The only difference in the two belts shownin Figs. 4 and 7,respectively, is in the configuration of the main body of each belt. 7

, In the form shown in Fig. the two ribs [5, j 16 project outwardly fromthe. main body of the belt and the main body has two surfaces 3| and 32arranged at right angles to each other on the opposite sides of the bodyfrom. the ribs, respectively. Thus, surface 31 is arranged perpendicl5and surface 32 is perpendicular to the longitudinal center line throughrib Hi. This construction provides a heavy main body portion for "thebelt, useful when the belt is arranged to transmit considerable power. Ion the other hand, in'the form of V-belt shown in Fig. 7, the crosssectional area of 'thebelt is In both forms of belts shown in Figs. 4and '7,

theribs are adapted to engage the cone surfaces of pulleys or sheaves34, having vertical axes' of rotation,'and the ribs it are adapted toengage the cone surfaces'of pulleys or sheaves 35, having horizontalaxes of rotation. With the belt trained or guided by the pulleys orsheaves 34, 35, no twisting will take place and the two ribs l5, [6,

will always remain in the position shown.

The form of V-belt shown in Fig. 10 is particuof. The present d whichcome within the meaning and range of larly adapted to be used withsheaves or pulleys arranged so that the flight of the belt can ex tendthrough a'series of horizontal and vertical to since changes andmodifications may be made therein without departing from the, spirit andembodied in other specific forms without de- 7 essential characteristicsthereembodiments are therefore. to be considered in all respects asillustrative and not restrictive, the scope of the invention beingparting from the indicated by the appended claims rather than by theforegoing description, and all changes equivalency of the claims aretherefore intended to be embraced therein. V

Having thus described my invention what I claim is:

1. A V belt of the type described comprising a plurality of radiallyextending V'-shaped ribs formed lengthwise thereof and coextensive thelength thereof, all of said ribs being substantially I similar in formand size and being arranged at an angle of approximately with respect toeach other, each of said ribs having three walls, including tWo inclinedside Walls and an outer end wall, the adjacent side walls of adjacentribs forming a reentrant angle, the two side walls of each rib beinginclined at substantially similar angles with respect to the radialcenter line of the rib and the outer end wall of each rib. beingarranged substantially at right angles the radial center line of therib.

2. A V belt of the type described comprising;- a body having threeradially extending V-shaped ribs formed lengthwise thereof andcoextensive. the length thereof, all of said ribs being sub-. stantiallysimilar in form and size and being;

arranged with the longitudinal center lines of;

and an outer end wall, the adjacent side walls' of adjacent ribs forminga reentrant angle, the: two side walls of each rib being inclined atsubstantially similar angles with respect to the radial center line ofthe rib and the outer end wall of each rib being arranged substantiallyat right angles to the radial center line of the rib.

. 3. A- belt comprising a plurality of radially extending V-shaped ribsformed lengthwise thereof and co-extensive the length thereof, anadjacent pair of ribs being arranged with their radial center linesdisposed at an angle less than with respect to each other, said ribseach .including side walls inclined at substantially similar angles withrespect to the center line of the rib, adjacent side wallsof adjacentribs being angularly disposed with respect to each other, to-form areentrant angle greater than the angle between the radial center linesofsaid adjacent ribs.

EUGENE E. BRUNNER.

